Relay



May 7, 1940. J. EQ os'rLlNE 2,199,570

RELAY Filed Nov. 12. 1938 ,mM-LA /Pc//a fsw/0 fav/55 INVENTOR. Jahn 1E. {J5-Nine SYM-W7' ATTORNEYS.

Patented May 7,1940

UNITED STATES l PATENT for-'Fics kminar John E. Ostline, Chicago. Iii., assigner to Associated Electric Laboratories, Inc., Chicago, lli., a corporation of Delaware Application November 'ia-193s, sum No. '240,001

11 claims. (ci. zopas) -10 These three relays arer ordinarily so connected and arranged that the automatic switches in the 'system having access to a line are controlled in accordance with the vvarious operations thereof to set up, by way of the line, outgoing call connec- A 15 tions from and incoming connections to a sub-l scriber substation` associated with theline, and

that the line is marked as busy to the automatic Y switches having access' thereto in the event a fault PPeBlS upon the line. Furthermore, .these so relays are so connected and arranged that the automatic switches in the system having access to the line are controlled in accordance with otherj operations thereof to set up, by way of the line, reverting call connections betweenv two of the im subscriber substations associated with the line. in

the event the line is of the-multiparty type.

Whse une circuits-of the type bnenydescribed 1 above are entirely satisfactory in operation, they are more expensive to manufacture and to, main- M tain in service than is desired, primarily due to the fact that three separate and distinct; relays,

are required in each line circuit in order to ren.

der the previously mentioned services by'way olifv theassociatedline. ,n 'al In orderto the manufacturingv and maintenance costs of line circuits; improvedy line circuita'disclosedin the application of clarence n. sensi. Naase'zsnfiuedoetor; v

ber 13,1938, were developed. f -Also, inthe abovey mentioned Lomaxappiication; a combined line and cut-ofi relay is'disclosed 'which is ihcorv porated in the ,iinprov'edf linecircuits disclosed therein. ',Briey, this combined-line and cut-roi! Arelay *in Vthe above-mentioned Lomax 4s application-,comprises a support. lineand cut-oi! magnets f'carried by the support, contact actuating members 'respectively associated with the magnets. set operativelyassociated` with each o f the `nieuwe, and a mechanical arrangesoj ment'for-,controiiing the cperation of the'xnem .ber asst'iciatedl with the line magnet in two steps.

. 'iiie mechanicalarran'gcmsnt is controlled by the operation of themember associated with the cut- ;oii' magnet andis so and arranged 55 thatl the member associated with the line magnet is only partially operated when the line magnet winding is energized prior to the energization of the cut-off magnet winding, that this member is fully operated when the line magnet winding' is energized subsequent to the energization of thep f cut-off magnet winding, and that this member is operated from a partially operated position to a fully operated position when the cut-oi! magnet winding is energized subsequent to and while, the

line nagnet winding is energized. The'contact lo sets operatively associated with these members are controlled in accordance with the various operations thereof. I Although the improvements as disclosed in the previously mentioned Lomax application consid- -16 erably reduce the manufacturing and mainte- .nance costs oi line circuits, further reductions in these costs are desirable and may be realizedby further simplifying the construction and arrangement-of the combined line and cut-oil.' re- '20 llays incorporated therein and by vincorporating these` improved combined line and cut-oil relays in the improved line circuits embodying further szlmplinecl 4control circuits disclosed in the copendingapplication of Pier Bakker, Serial No. 25 239,990, iiled November l2, 1938. Accordingly, it isan object of the present in vention to provide an improved relay particularly adapted for use as av comiiinedy line and cut-off relay ina telephone line. circuit, which is ot 30 vextremely simpleand-rugged construction. andarrangement and whichl is economical to manufacture` and thoroughly reliable in operation.

Anotherobject of the invention is to providev a relay of the character described which includes 35 a support, `first and second magnets carried' by .the support, a plurality of contact sets, and an vimproved arrangement for controlling the ope'r-l ations of the' contact sets in accordance with the operations of the magnets.

.A further object o! the'invention is to provide a relay oi' the type described which'compris'es an improvedmechanical arrangement for l governing the operationoi at leastone of the Vcontact sets, andmeans for controlling the mechanical' ar 4g rangement' in accordancewith the operations of nrstand second msnets.

4v'itl-.ie features of the present invention are illustrated as being incorporatedin a -relay particularly adapted foriuse as a combined line'and mf A cut-oi! relay in .a telephone iinecircuit and com-, prisin'g a support, and second magnets carried-by the support, a movablecontactfactuating Amember operatively llated with the nrst magnet, a movable l, ting member oper-L;v

atively associated with the second magnet, la first contact set operatively associated with the firstmentioned member, a second contact set operatively associated with the second-mentioned member, a. third contact set, each of the contact sets having a normal position and being movable away from its normal position in response to the operation of the one of the members with which it is operatively associated, and means for operatively associating the third l,contact set with the rst-mentioned member, thereby to control the operation of the third contact set away from its normal position and to control the return of the third contact setl to itsnormal position.

In accordance with, one feature of the invention, the relay comprises a support, first and secondmagnets carried by the support, a movable contact actuating member operatively associated with the flrst magnet, a movable contact actuating member operatively` associated with the second magnet, a first contact set operatively associated with the first-mentioned member, a second contact set operatively associated with the second-mentioned member, a third contact set, means normally effective operatively to associate the third contact set with the first-mentioned member, each of the contact setsD having first and second positions and being movable from its iirst position to its second position in response to a predetermined movement of the one of the memv bers with which it is operatively associated, and

automatic means for rendering the first-mentioned means ineffective. More particularly, the means normally effective operatively to associate the third contact set with the mst-mentioned member comprises a blocking element carried by one of the first and third contact sets and normally engaging the other of the first andthird contact sets; and each of the contact sets has a normal position and is movable away from its normal position in response to the operation of the .,one of the members with which it is operatively associated. Also, means is provided for biasing each of the contact sets to its normal position, whereby the third contact set is not moved away from its normal position in the event the firstmentioned member is operated subsequent to the operation of the second-mentioned member and the third contact set is returned to its normal position in the event the second-mentioned member is operated subsequent to the first-mentioned member.

In accordance with another feature of the invention, the relay comprises an actuating element associated with the blocking element, and means controlled when the winding of the second operation of the magnet is energized for causing the actuating rocking element and cause the first arm to move the blocking element whereby the third contact set is controlled, as previously pointed out. Finally, the blocking element is reset when the windings of both of the first and second magnets are deenergized. y

In accordance. with a further feature of the f plate 3M.

invention, the relay comprises iirst, second and third switch spring assemblies, each including a number of exible switch springs and having a normal position, means for biasing each of the switch spring assemblies to its normal position, the first switch spring assembly being operatively associated with the first-mentioned member, the second switch spring assembly being operatively associated with the second-mentioned member, each of the rst and second switch spring assemblies being movable away from its normal position in response to the operation of the one of the members with which it is operatively associated, and means including a flexible element carried by a spring in one `of the first and second switch spring assemblies and normally engaging a cooperating spring in the other of the first and third switch spring assemblies for operatively associating the third switch spring assembly with the first switch spring assembly, whereby the third switch spring assembly is moved away from its normal position when the first switch spring assembly is moved away from its normal position. Furthermore, the relay comprises means controlled by the operation of the second-mentioned member for moving the flexible element "out of engagement withthe cooperating spring, whereby the third contact set is controlled, as previously pointed out.

The novel features believed to be characteristic of the invention are set forth with particularity in the appended claims. The invention, both as to its organization and method of operation, together with further objects and advantages thereof, will best be understood by reference to the following specification taken in connection with the accompanying drawing, in which FigureI 1 is a perspective view of a relay embodying the present invention and which is adapted to be incorporated in the linecircuit of a telephone system; and Fig. 2 illustratesy diagrammatically the arrangement of the switch springs associated Isupporting plate including two portions 30| and 302 suitably secured .together by an arrangement including a strap 303 and an outwardly extending I'he portions 30| and 302 of the supporting plate respectively carry first and second magnets 300 and 300 arranged in yspaced parallel relationship with respect to each other andto the corresponding portions of the supporting plate, each being provided with a suitable energizing winding." Also, the magnets 303 and 306 are arranged closely adjacent to each other and comprise, together with the portions 30| and 302 of the supporting plate, a unitary structure. A supporting bracket 301 provided with two upwardly extending armsA 300 carrying a pivot pin 303 is secured to the upper portion 30| of the supporting plate by an arrangement comprising a screw 3|0 and a washer 3| I; and a supporting bracket 3|2 provided with two upwardly extending arms 3|3 carrying a pivot pin 3 I4 is secured to the upper portion 302 of the supporting plate by an arrangement comprising a screw 3 0 and a washer 3|6. An armature 3|1 provided with two lrearwardly extending arms 3| 0 is pivotally supported on the pivot pin 303 'adjacent the pole face of the core of the first magnet 305; and an armature 3|9 provided with two rearwardly extending arms 3201s pivotally supported on the pivot pin 3H adjacent the pole face of the core 75 of the second magnet 333. 'l'he armature 3|l is provided with a'downwardly extending arm 32| having a rearwardly yprojecting ilnger 322 on the ,outer end thereof extending to-the rear of the portion 33| of the` supporting plate adjacent the lright-hand edge thereof; the amature 3I3 is provided with a downwardly extending arm 323 having arearwardly proiectingiinger 323 on the outer end'thereot extending to the rear-of the portion 332 of the supporting plate adjacent the right-hand edge thereof. Two 'contact sets or switch spring assemblies 323 and 323, eachcomprising a plurality oi'indi'vidual iiexible switch springs suitably insulated from eachother and' from the portion 33| of the supporting plate, are

l'securedto the rear side ofthe portion 33| offthe supporting plate and cooperate with an insulating button 321 carried bythe nger 322 in such a manner that the individual switch springs in these switch spring assemblies are actuated into engagement and disengagement with, each other in a predetermined manner, when the armature 3|`| is rotated about the' pivot pin 333. Also, av

contact set or switch spring assembly 323, comprising a plurality of individual ilexible' switch springs suitably insulated from-each other and from the portion 332 of the supporting plate, is

secured to the rear side oi' the portion 332 of the supporting plate and cooperates with an insulating button.323 carried by the nnger '323 in such a manner that the individual switch springs in this switch spring assembly are actuated into engagement and disengagement with eachother in a predetermined mannerw'hen the amature a 3|3 is rotated about the pivot pin 3|I.

More particularly, the switch spring assembly 323 comprises a spring 333 provided with a `deitible rearwardly extending nange or blockingelement 33| adjacent the upper portion 'thereof rearwardly. The rearward movement ot the spring 33|| actuates the individual switch springs included in the switch spring assembly 32,3 into engagement and disengagement with each other in a predetermined manner more fully described subsequently. Furthermore, the' ange v33| provided on the upper portion of the spring 333 ena gages the upper portion of the spring 332 Iand ilexes the upper portion thereof rearwardly'. `This rearward movement of the s911118 332 actuates 'the individual switch springs included in the switch spring assembly 323`into engagement and disengagement .with each other in a predetermined manner more fully describedsubsequently. When the armature A3|3 is rotated'in a clockwise direction about the pivot 'pin 3| v3,-as viewed, inl

Fig. l, the insulating button 323 carried by the nger 323 engages`a switch spring 333 included in the switch spring assembly 323 and fiexes' the upper portion thereof rearwardly. `This rearward movement ofthe switch spring' 333 actuatesthe indiyidiial'wifch springs included in the. switch' l assembly323 into engagement and disen- 'sagement with -eseh other ina predetermined manner more fully described's'ubsequently.

a As previously noted the switch. spring assemblies 323- and 323 lare normally simultaneously actuated away from-their normal positions by thel movement of the armature3lfl. However-,an ar.

ent of the actuation of the switch spring assembly 323 and for releasing the switch spring assembly 323. thereby to cause the latter switch "spring vassembly to be returned tol its `normal position in the event that it is actuated. This arrangement comprises a rockingv bar 333 comprising a bearing portion rotatably secured between the rear wall of the portion 332 of the supporting plate 'and a tab 3,33 formed integral with the strap 333 and arranged closely adjacent to the rear wall ofthe portion 332e; the supporting plate. Ii'urthe'rmore, the rocking bai' -334 comprises an outwardly and downwardly extend- 'ving arm 333 arranged in the path of movement of the arm323 carried'bythe armature 3|3 and anl -outwardly and rearwardly 'extending -arm 331 arranged beneaththeilange. 33| providedon the upper portion of the spring 333 included in the y switch spring assembly 323. When the iarmatue '3|3 is rotated in a clockwise direction'about the *pivot "pin' 3H. the"` arm-323 thereon engages the arm 333 on'the'rocking bar 333,'tl1ereby to cause the rocking' bar 'to be rotated in s clockwise directionuponfits bearing, as vviewed 'in Fig. l.

When therocking bar 333 is rotated in a clockwise directionfupon its bearing. the arm 331 thereof engages the flange 33| provided on the upper. portionotthe spring 333 included in the.

spring assembly 323 willbeactuated. However, if the armature 3|`| occupies an `operated position, the switch spring assemblyI 323 will be released and returned to its normal position due to the fact that the autel-tend si' the nsnge m provided on -the upper portion' of, the spring 333 portion of the spring 332. Thus, it willbe ap- .parent that in the eventthe winding of the first magnet 303 is energized prior'to the energization l oi! the winding of the second magnet 333, the

switch spring assemblies 323 and 323 are simul- 'taneouslyactuated away from their normal positions; However, in the event the winding of the second magnet 333 is energized priorto the winding ofthe nrst magnet 333, ofnly the switch spring assembly 323 is actuated upon the energization of the winding of the iirst magnet 333. Finally, in the event that the winding ofi-the second magnet 333 is energized subsequontyto, the energize.- tion of the winding of the first magnet 333; the switch spring assembly 323 is released and returned to its normal positionv whenthewinding of'the'second magnet is energized. The switch spring assembly 323 is actuated away from its normal position directly in accordance with the energization of the winding of the second magnet v33 3 and the actuation thereofvis independent of spring assemblies associated with' the nrstand second magnets RHI-and Ri Il, respectively, are

magnet R|23 is energized, the 'armature `indicated at 3Ila is 'rotated in a clockwise direction about the' pivotv pin 333s,l thereby to cause the button-321s carried thereby to nex '3A rangementis `provided for rendering the' actua- I tion of the switch spring assembly 323 independloccupie's a non-operated posi-y 'is flexed out of abutting relation with the upper Y '50 constructed and arranged that, when the ill-st 70..

the upper portion of the spring ula. This movement of the spring 0a is effective to actuate the switch spring assembly 325g, thereby to move the switch springs RAI!! and RCI25 into engagement, to moveI the switch springs RAIZI and RCI!! into disengagement, and to move the 4 is effective to close the R" contacts associated therewith; and this movement of the switch springs RAIZB, RCI!! is effective to open the R" contacts associated therewith. Subsequently, when the secondmagnet RIN is energized, the amature indicated at liia is rotated in a coun'- terclockwise direction about the pivot pin Illa, thereby to cause the insulating button 329:1 carried thereby to engage the switch spring #33a included in the switch spring assembly 8a and flex the upper portion thereof, thereby to actuate the individual switch springs included in this switch spring assembly. This movement of the switch spring la is effective to move the switch springs RAI Il and RCI Il into engagement, thereby to close the X contacts associated therewith. Subsequent movement of the switch spring Ina is effective to move the switch springs RAI Il and RCII3 into disengagement, to move the switch springs RAI Il and RCI I5 into disengagement, to mov'e the switch springs RAII2 and RCII2 into engagement, to move the switch ksprings RAI I6 and RAI I'I into engagement, and, finally, to move the switch springs RAIII and RCI I1 into disengagement. the switch spring Illa is effective to move the switch springs RAI II and RCI II into disengagement, thereby to open the "Y contacts associated therewith.

Also, when the armature Mia is rotated in a counterclockwise direction about the pivot pin Illa, the arm )36a of the rocking bar ula. is engaged, thereby to cause the rocking bar to be rotated in a clockwise direction about its pivot.

This rotation of the rocking bar la is effec-- tive to cause the arm la thereof to flex the outer end of the flange la provided on the upper portion of the spring #30a included in the switch spring assembly )25a out of engagement with the upper portion of the spring 2a included in the switch spring assembly 326:1. The switch spring assembly 326a is thenreleased and the` individual switch springs thereof are actuated to their normal positions, thereby to move the switch springs RAIN, RCI and RAIN, RCI21 into disengagement and to move the switch springs RAIN, RCI28 into engagement. Also, it is nbted that in the event the second magnet RI Iii is energized prior to the energization of the first magnet RIZII, the switch spring assembly ula is actuated, in the previously described manner, incident tothe energization of the second magnet RIII), and the flange 33Ia provided on lthe upper portion of the spring 0a included in the switch spring assembly 3250. isgiiexed out of engagement with the upper por- Final movement o'fA tion of the spring 2a included in the switch vspring assembly 328er. Accordingly, when the first magnet RIIII is then energized, only the switch spring assembly Illa is actuated, in the previously described manner.

The manner of utilizing a relay of the character of that disclosed as a combined line and cut-0H relay in the line circuit of a telephone system is disclosed in the previously referred to copendingv application of Pier Bakker.

While there has been described what is at present ,considered to be the preferred embodiment of the invention, it will be understood that various modifications may be made therein, and it is intended to cover in the appended claims all such modifications as fall within the true spirit and scope of the invention. y

What is claimed is:

l. A relay comprising, in combination, a support, first and secondmagnets carried by saidsupport, a movable contact actuating member operatively associated with said first magnet, a movable contact actuating member operatively associated with said second magnet, a first contact set operatively associated with said firstmentioned member, a second .contact set operatively associated with said second-mentioned member,a third contact set, means normally effective operatively to associate said third contact set with said first-mentioned member, each of said contact sets having first and second pov sitions and being movable from its nrst position to its second position in response to a predetermined movement of the one of said members with which itis operatively associated, and automatic means for rendering said first-mentioned means ineffective.

2. A relay comprising, in combination, a support, first andf'second magnets carried by said support, a movable contact actuating member operatively associated with said first magnet, a movable contact actuating member operatively associated with said second magnet, a first contact set operatively associated with said firstmentionedL member, a second contact set operatively associated with said second-mentioned member, a third contact set, means normally effective operatively to associate said third contact set with said first-mentioned member, each of said contact sets having nrst and second positions and being movable from its rst position to its second position in response to a predetermined movement of the one oi said members with which it is operatively` associated, and means controlled by the predetermined movement of said second-mentioned member for rendering said first-mentioned means ineffective.

3. Arelay comprising, in combination, a support, first and second magnets carried by said support, a movable contact 'actuating member operatively associated with said..first magnet, a movable contact actuating member operatively associated with said second magnet, a first contact set operatively associated with said firstmentioned member, a second contact 4set operativey associated with saidsecond-mentioned member, a third contact set, meansnormally effective operatively to associate said third contact set with said first-mentioned member, each of said contacts having a normal position and being movable away from its normal position in response to the operation oi the one of said members with which it is operatively associated, and means controlled by the operation of said second-mentioned member for rendering said first- 15 mentioned means ineiective, whereby said third contact set is not moved away from its normal position in the event said first-mentioned member is operated subsequent to the operation of said second-mentioned,l member.

4. A relay comprising, in combination, a supv ing movable away from its normal position in rey sponse to the operation of the one of said members with which it is operatively associated, means for biasingeach of said contactlsets to its normal position, and controlled by the operation of said second-mentioned member `for rendering said mst-mentioned means ineffective, whereby said third contactset is returned to its normal position in the event said ysecond-mentioned member is operated subsequent to the operation ofsaid iirst-mentioned member.

5. A relay comprising, in combination, a support, iirst and'second magnets carried by said support, a movable contact actuating member operatively associated with said first magnet, a movable contact actuating member operatively associated with said second magnet, a first contact set' operatively associated with said iirstmentioned" member, a second contact set operatively associated with said second-mentioned member, a third contact set, mechanical means for operatively associating said third contact with said iirst-mentioned member, each of said' contact sets having first and second positions and whereby said ,third contact set is not moved Vto its second position in the event said first-mentioned member is operated subsequent to the operation of said second-mentioned member and said third contact set is returned to its iirst position in the event said second-mentioned member is operated subsequent to the operation of said first-mentioned member. f

6. A relay comprising, in combination, a support, rst and second magnetscarried by said support, al movable contact actuating member operatively associated with said first magnet, a movable contact actuating member operatively associated with said Isecondmagne't, a 'iirst contact set operatively associated with said iirstmentioned member, a second contact set operatively associated with" said second-mentioned member, a third contact set, mechanical means for operatively associating said third contact set with said first-mentioned'member, each ofC said associated, means for biasing each of said contact sets to its first position, and means controlled by the operation of said second-mentioned member for actuating said mechanical means, whereby said third contact set ls not moved to its second position in the event said inst-mentioned member is operated subsequent to the operation of said second-mentioned memberand said third contact set is returned toits iirst position in the event said second-mentioned member is operated subsequent to the operation of said rst-mentioned member.

7. A relay'comprising, in combination,a sup,

Aport, first and second' magnets carried b y .said

support, a movable contact actuating member operatively associated with said rst magnet, a movable contact actuatingmember operatively associated with said second magnet, a iirst contact set-operatively associated with said viirst.

mentioned member, a second contact set operatively associated with` said second-mentioned member, a thirdA contact set, lmechanical means for operatively associating -said third contact set with said first-mentioned member, each of said contact sets having nrst andfsecond positions and being movable from its iirst position to its second position in response to the operation of the one of said members with which it is operatively associated, means for biasingeach of -said contact sets to its rst position, and an actuating element operatively associated with said mechanical means and said second-mentioned member,

said actuating element being so connected and arranged that said mechanical means is actuated in response to the operation oi' said secondmentioned member. whereby said third contact set is not moved toits second position in thei event said mst-mentioned member is operated subsequent to the operation of said second-mentioned member and said third contact set is returnedl to its iirst position in the event said second-mentioned member is operated subse- 'quent td the operation of said first-mentioned member.

8. A relay comprising, in combination, asapport, first and second magnets carried by said support, a novable contact actuating member operatively associated with said iirst magnet, a -movable contact actuating memberv operatively associated with said second magnet, a iirst contact set operatively associated with said rstsaid mst-mentioned member, each of-said contact sets having iirst and second positions and being movable from itsA first position to its second position in response to the operation of the' one oi' said members with which it isoperatively associated, means for biasing each of said contact sets to its iirst position, and actuating element operatively associated with said blocking element v. and said second-mentioned member, said actuating element being so constructed and arranged that said Ablocking element is actuated away from its normalposition in response to the operation of said second-mentioned member, whereby said I third contact set is not moved to its second position in theevent said mst-mentioned member is l said second-mentioned member is operated subsequent tothe operation of said iirst-mentioned member, and means controlled by the restoration member, a third contact set, mechanical means for operatively associating said third contact set with. said first-mentioned member, each of said contact sets having first and second positions and being movable from its ilrst position to its second position in response to the operation of the one o! said members with which it isl operatively associated, means i'or biasing each of said contact sets to its iirst position, and a rocking element pivotally mounted on said support, said rocking element having a iirst arm associated with said mechanical means and a second arm associated with said second-mentioned member, said rocking element being so constructed and arranged that said second arm is operated in response to the operation of said second-mentioned member to rock said element and cause said first arm to actuate said mechanical means,

whereby said third contact set is not moved to its second position in the event said first-mentioned member is operated subsequent to the operation of said second-mentioned member and said third contact set is returned to its iirst position in the event said second-mentioned member is operated subsequent to the operation oi' laid mst-mentioned member. A

10. A relay comprising, in combination, a support', iirst and second magnets carried by said support and each provided with an energizing winding, a movable contact actuating member operatively associated with said first magnet, a movable contact actuating member operatively associated with said second magnet, a nrst contact set operatively associated with said nrstmentioned member, a second contact set operatively associated with said second-mentioned member, a vthird contact set, means no rmally effective operatively to associate said third contact set with said first-mentioned member, each of said members being operative when the winding of-the associated magnet is energized, each of said contact sets having first and second posi- 1 tions and being movable from its ilrst position to its second position in response to the operation of the one of said members withV which` it is operatively associated, means for biasing each of said contact sets to its first position, and means controlled when said second magnet winding is energized for rendering said mst-mentioned means ineffective, whereby said third contact set is not moved to its second position in the event said first magnet winding is energized subsequent to the energization of said second magnet winding and said third contact set is returned to its iirst position in the event' said second magnet winding is energized subsequent to the energize.- tion of said' ilrst magnet winding.

11. A relay comprising, in combination, a support, ilrst and second magnets carried by said support and each provided with an energizing' winding, a movable contact actuating member operatively associated with `said iirst magnet, a movable contact actuating member operatively associated with said second magnet, a first cona,1oo,svo

met set operatively associated withsaid nrs'tmentioned member, a second contact set operatively associated with said second-mentioned member, a third contact set, mechanical means for operativelyassociating said third contact set with said mst-mentioned member, each of said contact sets having nrst and second positions and being movable from its iirst position to its second position in response to the operation oi' the one of said members with which it is operatively associated, means for biasing each of said contact sets to its first position, each of said members ,being operative when the winding of the assosupport and each provided with an energizing winding, .a movable contact actuating member operatively associated with said ilrst magnet, a movable contact actuating member operatively associated with said second magnet, a ilrst contact set operatively associated with said firstmentioned member, a second contact set operatively associated with said second-mentioned member, a third contact set, means including a mechanical element having a normal position for operatively associating said third contact set with said iirst-mentioned member, each of said contacts sets'having iirst and second positions and being movable from its rst position to its second position in response to the operation oi the one ofsaid members with which it is operatively associated, means i'or biasing each of said contact sets to its first position, each of said' members being operative when the winding ot the associated magnet is energized, means controlled when said second magnet winding is energized for actuating said mechanical element away from its normal position, whereby said third contact set is not moved to its second position in the event said iirst magnet winding is energized subsequent to the energization of. said second magnet winding and said third contact set is returned to its ilrst position in the event said second magnet winding is energized subsequent to the energization oi said rst magnet winding, and means controlled when said rst and second magnet windings are deenergized for returning said mechanical element to its normal position.

contact sets to its first position, said irst con- I tact set being operatively associated with said first-mentioned member, said second contact set being operatively associated with said secondmentioned member, each' of said iirst and second contact sets being movable from its ilrst position to its second positicr;` in response to the operation of the one of said members with which it is operatively associated, means including an element norma11y`efl'ective operatively to associate said third contact set with said-first contact set, whereby said third contact set is .moved from its first position to its second position when said iirstA contact set is moved fromvitsy rst position to its second position, and means controlled by the operation of'said second-mentioned member for rendering said element ineffective, 'whereby position in the eventsid first-mentioned member is operated subsequent to the operation of said second-mentioned member and said third contactset is returned to its iirst positionv in the event said second-mentioned member is operatedl subsequent to the operation o! said first-mentioned member. Y

14. A relay comprising, in combination, a support., first and second magnets carried by said mentioned member, said second contact set be-l ing operatively associated with said second-mentioned member, each of said first and second contact sets being movable from its nrst position to 1 its second position in *response to the operation lof the one of said members with which it is operatively associated, means including a movable element carried by one of said ilrst and third contact sets and normally engaging the other of said first and third contact sets for operatively associating saidthird contact set with said first contact set, whereby said third contact set is moved from its rst position to its second position .when said first contact set`is moved from its first position to its second position, and means controlled by the operation of said second-memtioned member for moving said element out of engagement with-said other of said contact sets, whereby said third contact set is notvi'iovedv to its second position in the eventsaid first-mentioned member is operated subsequent \tofthe operation of said second-mentioned member and said third Contact ses is returned to as erst posi-v tionin the event said second-mentioned mem-i ber is operated subsequent to the operation of said first-mentioned member.'

15. A relay comprising, in combination, a support, first and second magnets carried by said support, a movable contact actuating member operatively associated with said nrsty magnet, a.4

movable contact actuating member operatively associated with said second magnet, first, second and third contact sets eachihaving first' andl second positions, means for biasing each of said contact sets to its first position, said tlrst contact set being operatively associated with'csaid first-mentioned member, said fsecond contact set being operatively 'associated with' said second-'mentioned member, each oi.' said first andsecondcontact sets being4 movable from its first-position to itssecond position in response to the operation of the one of said members with which it is operatively'-associated, means including an elementhaving a normal position for operatively associating'said third contact set with said.

first contact set,'whfereby said third contact set is moved from its first position to itssecond position when said first contact set is moved from its first position to its second position, means controlled by the operation of said second-mentioned member for actuating said element away from its normal position, whereby said third contact set is not moved to its second position in the event said first-mentioned member is operated subsequent to the operation of said second-mentioned .means and said third contact set is returned to its first position in the event said secsaid third contact set is not moved to its second ond-mentioned member is operated subsequent to the operation of said first-mentioned member, and means controlled by the restoration of ,both of said members for returning said element to its normal position.

16. A relay comprising, in combination, a support,'iirst and second magnets carried by said support, av movable contact actuating member operatively associated with said -first magnet, a

movable contact actuating member operatively l associated with said second magnet, first, second `and third switch spring assemblies each including a number of flexible switch springs and having a normal position, means for biasing each of said switch spring assemblies to its normal` position, said first switch spring assembly being operatively associated with said first-mentioned means, said s econd switch assembly being operatively associated with said second-mentioned member, each. of said first and second switchl spring assemblies being movable away from its normal position in response to the operation of the one of said members with which it is operatively associated, means including a flexible element carried by a spring in one of said first and third switch spring assemblies and normally engaging a cooperating spring in the other of said first and third switch spring assemblies for operatively associating said third switch spring assembly with said first switch spring assembly, whereby said third switch spring assembly is moved away from its normal position when said first switch spring assembly is moved away from its normal positiomland means controlled by the operation of said second-mentioned member for moving said element out of engagement with said cooperating spring, whereby said third contact set is not moved away from its normal position 1n the event said first-mentioned -member is operated subsequent to the operation of said secondmentioned member and` said third contact set is returned to its normal position in theevent said second-mentioned member is operated subsequent to the operation of said first-mentioned member. 17. A relay comprising,'in combination, a support; first and second magnets carried by said support, a movable contact actuating member operatively associated with said first magnet, a movable contact actuating member operatively i associated with said second magnet, first, second and third switch spring assemblies, each including a number of nexible switch springs and having a normal position, means for biasing each of said switch spring assemblies to its normal position, said `first switch spring assembly being operatively associated with said first-mentioned meanatsaid second switch spring assembly being operatively associated with said `secondmentioned member, each of said rst and second switch spring assemblies being movable away from its normal position in response to the oper- 'ation of the one of said members` with which it is operatively associated, means including a' said mst" and third switch spring assemblies and normally engaging a cooperating spring in the other of said iirst and third switch spring asf -associated with said ilexible element and a second arm associated with said second-mentioned member, said rocking element being so con- 15 structed and arranged that said se'cond arm is operated in response to the operation of said second-mentioned member to rock said element and cause said iirst arm to move said ilexible element out oi' engagement with said cooperating spring, whereby said third contact set is not moved away from its normal position in the event said first-mentioned member is operated subsequent to the operation of said second-mentioned member andsaid third contact set is returned to its normal position in the event said second-mentioned member is operated subsequent to the operation oi said mst-mentioned member.

- JOHN E. OBTLINE. 

